Bracket holder for junction boxes



Feb.- 9 1926.

1,572,610 w. LACKS ET AL BRACKET HOLDER FOR JUNCTION BOXES Filed 001;.30, 1924 ENTOR' mm. id 2 7W2 f/2V ATTORNEY Patented Feb. 9, 1926.

UNITED STATES FATENT @FFICE.

WILLIAM LAC-KS AND MORRIS S. NEWMAN, OF NE'WARK, NEW JERSEY.

BRACKET HOLDER FOR JUNCTION BOXES.

Application filed October 30, 1524.

To all whom it may concern Be it known that we, \VILLIAM LACKS andMonius S. NEWMAN, citizens of the United States, residing at Newark, inthe county of Essex and State of New Jersey, have invented new anduseful Improvements in Bracket Holders for Junction Boxes, of which thefollowing is a specification.

This invention relates to devices characterized as bracket holders forjunction boxes, which latter are of the type used in the walls ofbuildings to receive the electric ca bles and to which connections aremade to the wall fixtures.

Such appliances are usually formed with their major portion offset, soas to extend within the box, and therefore materially reduce the area tobe utilized for the housing of the cables.

Any metal may be used in the construction of the improved bracket holderbut it is preferred that some suitable spring metal be used, which maybe readily stamped out upon. a die press or the like.

One of the main objects of the invention is to provide bracket holders,so designed as to be completely ready for connection to junction boxesof different size and con-' figuration.

Another purpose is to produce a bracket holder adapted for instantconnection to the box and which does not utilize space therewithin.

A further aim is in the provision of means, actuated by a single stemscrew, for rigidly fastening the fixture connections to the journal boxbracket.

These and like other aims'are accomplished by the novel construction,combination and arrangement of parts hereinafter described andillustrated in the accompanying drawing, forming a material part of thisdisclosure, and in which Figure 1 is a top plan view of a lu'acketholder made in accordance with the invention.

Figure 2 is a longitudinal edge elevation illustrating the attachment ofthe fixture supporting stem thereto.

Figure 3 is a cross section of a square junction box and illustrates theattachment of the bracket holder and stem.

Figure d is a top plan view of a rectangular shaped junction,illustrating the application of the bracket holder thereto.

Figure 5 is a similar view illustrating the Serial No. 746,761.

application of the bracket holder to a round junction box.

Figure 6 is a plan view of a modified form of the bracket holder.

Figure 7 is still another plan view illus trating a furthermodification.

Figure 8 is a longitudinal edge elevation of the same.

The junction boxes 10, 11 and 12 respectively, are of the generallyaccepted type and as here illustrated are of square, oblong and roundconfiguration and consist of a casing formed of sheet metal, around theopen ends of which are formed the outwardly directed flanges 13 and 1%and in some the flanges are dispensed with and outwardly directed lipsprovided as illustrated at 15 in Figure 3.

These junction boxes are set in openings provided in the walls ofbuildings and are adapted to receive cables or wires used as conveyorsof electric currents to the lighting fixtures not disclosed.

In the preferred form of the invention, a relat'vely thin blankof sheetmetal is struck out, to form the bracket holder illustrated in Figure 1,which consists of the horizon tally extending body portion 16 from themedial point of which the arms 17 and 1.8 project outwardly at anglesfrom the op posit-e edges thereof. The body portion 16 is formed with acentrally disposed screw threaded opening 19, while the opposite endsare provided with openings 20.

The degree of angulation of arms 16 and l? with respect to the bodyportion 16 of the bracket may vary ccording to the configuration of thejunction boxes to which they may be attached.

Likewise the metal at the intersection of the body portion 16 and thearms 17 and 18 is sheared in ai'cuate plane as at 21 and 22 to avoidsharp corners.

The improved bracket holders are adapted to extend across the open endof the junction box with the extremities of the body portion 16 seatingupon the box flange or lips such as may be provided thereon, with theopenings 20 in register with similar openings in the said flange andlip. Stub bolts 23 are passed through the openings in the flange andbracket holder and nuts 2% when adjust-ed serve to hold the bracketfirmly upon the junction box. The arms 17 and 18 extend diagonallyacross the box and the extremities thereof lay flush against the upperedges of the opposite side wall of the box and serve as auxiliarysupporting means for the bracket.

A hollow externally screw threaded stud 25 takes into the centrallydisposed threaded opening 19 of the bracket, and an interiorly threadedknuckle not illustrated is then screwed thereon.

Cables f om the junction box are passed tlnrough the hollow stud andknuckle to make connection with the lamp or lamps supported by thefixtures.

YV here square or rectangular junction boxes are to be connected up withthe light ing fixtures, the bracket holder is placed across thelongitudinal central part of the box and as the body portion of the saidbracket holder is relatively of greater length than the combined lengthof the arms 1'? and 18, the ends of the bracket holder will be securedto the opposite end walls of the box, by the stud bolts 23.

When the bracket holder is to be attached to a round box as illustratedin Figure 5, the holder is adjusted so that the arm members 17 and 18span the smaller opening and stub bolts 26 pass through openin s provided in the extreme ends of the arms and take into openings in the boxflange or lip. Nuts 28 are threaded upon the stub bolts 26 and serve tohold the bracket holder tirn'ily upon the box.

lVhile the arms 17 and 1S d in ar alar plane across the open upper endof the box and have their ends screwed in the manner stated, the bodyproper or the bracket extends at right angles to the axis of the roundbox.

The outer ends of the bracket body portion lay flush against the outeredge of the box walls or flange and serves in conjunction with the armsin providing a rigid supporting means "for the bracket holder.

In the modified form illustrated in Figure (3 the bracket holder 29comprises an elongated strip of metal haying an enlarged central portion30, to receiye an interiorly screw threaded stud 31. The opposite endsof bracket holder 29 are formed with slots 32 adapted to receive boltsor screws, not illustrated by means of which it may be attached to thejunction box.

The slots 32 are provided so that the bracket holder 29 may be. attachedto boxes o't' dil'li'erent sizes and the enlarged central portion 30,reentorces the bracket holder at the point where the stud 31. is securedthe etc.

The modification illustrated in l igure 7 discloses the bracket holderin the form of a strap 33, having a threaded central opening adapted forthe reception of a threaded stud 84:. The opposite ends of the bracketholder in this instance are termed with a series of openings 35 arrangedin spaced relation. These openings 35 are provi ed, wher by thebracketholder may be attached to boxes of dil'Fer-ent sizes, the boltsor screws being passed through the openings which register with theproper openings in the box flange or lip as the case may be.

In this manner we have provided a brack et holder that may be titted tojunction boxes of ditlj'ercnt configuration and sizes and which willrigidly support the fixtures thereon.

l ll-zewise, the bracket holders may be stamped out: of sheet metal andare therefore economical to manufacture.

Although we have described our improvements with considerable detail andwith re spect to certain particular forms of our invention, we do notdesire to be limited to such details since many changes andmodifications may well be made without departing ti-(an the spirit andscope o't our invention in its broadest aspect.

Ha. ing thus described our invention, what we claim as new and desire tosecure by Letters Patent, is 2- 1. A bracket holder formed of a Hatplate, having a screw threaded ce'i'itral. opening, said plate beingprovided with pairs of obliquely disposed arms oi dii'lcrcnt length,said arms having openings in the outer ends thereof.

An interchangeable bracket holder for junction boxes torn'ied of a fiatplate, having a screw threaded central opening, said plate beingpri'n'ided with pairs of arms of di i'l'erent lengths, the shorter oisaid arms disposed in oblique relation to the longer of said arms andthe said arms ha ving openings arranged in their outer ends adapted forthe reception of seeming means to standard junction boxes.

This specification signed and witnessed this 28th day of October, 1924-.

lVI-LLIAM LACKS. IvIORR-IS S. NEWhLaN'J

